| 摘要 |
<p>The invention concerns a device delivering filaments of molten material, in particular glass, by Joule heating by means of an electrical power supply, comprising lateral plates, a bottom plate provided with nipples for the flow of the molten material and, optionally, an upper grid, and is characterised in that at least one of these parts likely to be in contact with the molten material is formed by - a solid part made of iron-based alloy having a melting temperature higher than 1450°C, forming a substrate, - a metal bonding layer formed on at least one part of the surface of the substrate, - a ceramic layer covering the metal bonding layer, the metal layer and the ceramic layer forming a diffusion barrier against the components of the alloy forming the substrate, and - a protective coating layer made of platinum or platinum alloy, deposited directly on the ceramic layer.</p> |
